Foot covering



FIG. 1 is a left front perspective view of my ornamental design for a foot covering shown in use attached to the foot of a wearer, the foot being shown in broken line for environmental purposes only and forming no part of the claimed invention;

FIG. 2 is a top plan view of the foot covering hereof in an extended, lay-flat condition;

FIG. 3 is a left side elevational view thereof, the right side being a mirror image thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front end elevational view thereof; and,

FIG. 6 is a rear end elevational view thereof. 

The ornamental design for a foot covering, as shown and described. 